Alley Oop is a name for a basketball play in which one player throws a pass to a teammate near the basket, which the teammate catches in mid-air and immediately dunks. For a particularly impressive example, check out this video of Allen Iverson -- all 6'1" of him -- converting an alley-oop against St. John's.
How to Windmill Dunk. Three Parts: Executing the Basic Windmill Dunk Improving Your Technique Trying Variations Community Q&A. Dunking is a coveted skill in basketball. If you really want to grab the crowd’s attention, a smooth windmill dunk will do the trick. Not everyone can accomplish this difficult maneuver, and it will take lots of practice to learn how to do it correctly. Your hard work will be worth it, however, if you are successful.